【Deadening Plan Stage 3｜A Higher-Tier Plan That Reduces Door Resonance for Clearer Sound Definition】

Deadening Plan Stage 3 is a deadening plan designed to deliver an even more refined result, built on our popular Stage 2.
By firmly suppressing unwanted vibrations around the door, it makes it easier for the sound produced by your speakers to project more directly forward—helping you tighten the low end and refine the sense of sound definition.

In Stage 3, we increase the amount of aluminum reinforcement, boosting the rigidity of the vehicle body panels to finish in a way that more powerfully suppresses door resonance.
In addition, the deadening material on the surface is upgraded as well, so the setup offers greater peace of mind not only for vibration damping, but also for durability and sound absorption.
When you listen to music, one of the strengths of this plan is that the low frequencies become less likely to sound muddy, making the contours of vocals and instruments easier to hear.

With the factory setup alone, door ringing and extra vibrations can inevitably get in the way of the sound.
Once those are properly addressed, it becomes easier to bring out what the speakers can truly do, and even the songs you already know will start to sound different.
This is especially well-suited if you want to “make the bass tighter,” “reduce sound smearing,” or “create a setup you can use with confidence for a long time.”

Deadening isn’t something you can finish just by sticking materials on—where and how you treat each area makes a big difference in the outcome.
At Logon, while looking at the vehicle’s condition and the speaker configuration, we shape the install toward directions where the effects are more likely to show within a reasonable scope.
And if you’re going to have it installed, it’s important to properly address even the parts you can’t see, so you can enjoy the sound’s cohesiveness comfortably.

Stage 2 feels a bit lacking, but you don’t want to go overboard.
That’s exactly why this Stage 3 is a great fit.
If you want to build a solid foundation for the sound while also bringing everything together in a direction that feels “easy to listen to” on your everyday drives, please feel free to consult us at any time.